X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/cc9f6e38162d3c1bf6ca97536c2477f476c8e01b..7ee9d059c4eecf68ae4f8b0fb99ae2471eda79af:/iokit/Kernel/IOMapper.cpp diff --git a/iokit/Kernel/IOMapper.cpp b/iokit/Kernel/IOMapper.cpp index f9be25915..23b0db10e 100644 --- a/iokit/Kernel/IOMapper.cpp +++ b/iokit/Kernel/IOMapper.cpp @@ -1,34 +1,45 @@ /* * Copyright (c) 1998-2004 Apple Computer, Inc. All rights reserved. * - * @APPLE_LICENSE_HEADER_START@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * - * The contents of this file constitute Original Code as defined in and - * are subject to the Apple Public Source License Version 1.1 (the - * "License"). You may not use this file except in compliance with the - * License. Please obtain a copy of the License at - * http://www.apple.com/publicsource and read it before using this file. + * This file contains Original Code and/or Modifications of Original Code + * as defined in and that are subject to the Apple Public Source License + * Version 2.0 (the 'License'). You may not use this file except in + * compliance with the License. The rights granted to you under the License + * may not be used to create, or enable the creation or redistribution of, + * unlawful or unlicensed copies of an Apple operating system, or to + * circumvent, violate, or enable the circumvention or violation of, any + * terms of an Apple operating system software license agreement. * - * This Original Code and all software distributed under the License are - * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER + * Please obtain a copy of the License at + * http://www.opensource.apple.com/apsl/ and read it before using this file. + * + * The Original Code and all software distributed under the License are + * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the - * License for the specific language governing rights and limitations - * under the License. + * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. + * Please see the License for the specific language governing rights and + * limitations under the License. * - * @APPLE_LICENSE_HEADER_END@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ #include #include +#include #include +__BEGIN_DECLS +extern ppnum_t pmap_find_phys(pmap_t pmap, addr64_t va); +__END_DECLS + #define super IOService OSDefineMetaClassAndAbstractStructors(IOMapper, IOService); -OSMetaClassDefineReservedUnused(IOMapper, 0); -OSMetaClassDefineReservedUnused(IOMapper, 1); -OSMetaClassDefineReservedUnused(IOMapper, 2); +OSMetaClassDefineReservedUsed(IOMapper, 0); +OSMetaClassDefineReservedUsed(IOMapper, 1); +OSMetaClassDefineReservedUsed(IOMapper, 2); OSMetaClassDefineReservedUnused(IOMapper, 3); OSMetaClassDefineReservedUnused(IOMapper, 4); OSMetaClassDefineReservedUnused(IOMapper, 5); @@ -61,6 +72,7 @@ static IOMapperLock sMapperLock; bool IOMapper::start(IOService *provider) { + OSObject * obj; if (!super::start(provider)) return false; @@ -74,6 +86,14 @@ bool IOMapper::start(IOService *provider) sMapperLock.unlock(); } + if (provider) + { + obj = provider->getProperty("iommu-id"); + if (!obj) + obj = provider->getProperty("AAPL,phandle"); + if (obj) + setProperty(gIOMapperIDKey, obj); + } return true; } @@ -111,11 +131,48 @@ void IOMapper::setMapperRequired(bool hasMapper) void IOMapper::waitForSystemMapper() { sMapperLock.lock(); - while ((vm_address_t) IOMapper::gSystem & kWaitMask) + while ((uintptr_t) IOMapper::gSystem & kWaitMask) sMapperLock.sleep(&IOMapper::gSystem); sMapperLock.unlock(); } +IOMapper * IOMapper::copyMapperForDevice(IOService * device) +{ + OSObject * obj; + IOMapper * mapper; + OSDictionary * matching; + + obj = device->copyProperty("iommu-parent"); + if (!obj) + return (NULL); + + if ((mapper = OSDynamicCast(IOMapper, obj))) + return (mapper); + + matching = IOService::propertyMatching(gIOMapperIDKey, obj); + if (matching) + { + mapper = OSDynamicCast(IOMapper, IOService::waitForMatchingService(matching)); + matching->release(); + } + if (mapper) + device->setProperty("iommu-parent", mapper); + else + obj->release(); + + return (mapper); +} + +ppnum_t IOMapper::iovmAllocDMACommand(IODMACommand * command, IOItemCount pageCount) +{ + return (0); +} + +void IOMapper::iovmFreeDMACommand(IODMACommand * command, + ppnum_t addr, IOItemCount pageCount) +{ +} + void IOMapper::iovmInsert(ppnum_t addr, IOItemCount offset, ppnum_t *pageList, IOItemCount pageCount) { @@ -130,98 +187,44 @@ void IOMapper::iovmInsert(ppnum_t addr, IOItemCount offset, iovmInsert(addr, offset + i, pageList[i].phys_addr); } -struct ARTTableData { - void *v; - upl_t u[0]; -}; -#define getARTDataP(data) ((ARTTableData *) (data)->getBytesNoCopy()) - -OSData * -IOMapper::NewARTTable(IOByteCount size, - void ** virtAddrP, ppnum_t *physAddrP) +OSData * IOMapper:: +NewARTTable(IOByteCount size, void ** virtAddrP, ppnum_t *physAddrP) { - OSData *ret; - kern_return_t kr; - vm_address_t startUpl; - ARTTableData *dataP; - unsigned int dataSize; - upl_page_info_t *pl = 0; - - // Each UPL can deal with about one meg at the moment - size = round_page_32(size); - dataSize = sizeof(ARTTableData) + sizeof(upl_t) * size / (1024 * 1024); - ret = OSData::withCapacity(dataSize); - if (!ret) - return 0; + if (!virtAddrP || !physAddrP) + return 0; - // Append 0's to the buffer, in-other-words reset to nulls. - ret->appendBytes(NULL, sizeof(ARTTableData)); - dataP = getARTDataP(ret); + kern_return_t kr; + vm_address_t address; - kr = kmem_alloc_contig(kernel_map, &startUpl, size, PAGE_MASK, 0); + size = round_page(size); + kr = kmem_alloc_contig(kernel_map, &address, size, PAGE_MASK, 0 /*max_pnum*/, 0 /*pnum_mask*/, false); if (kr) return 0; - dataP->v = (void *) startUpl; - - do { - upl_t iopl; - int upl_flags = UPL_SET_INTERNAL | UPL_SET_LITE - | UPL_SET_IO_WIRE | UPL_COPYOUT_FROM; - vm_size_t iopl_size = size; - - kr = vm_map_get_upl(kernel_map, - (vm_map_offset_t)startUpl, - &iopl_size, - &iopl, - 0, - 0, - &upl_flags, - 0); - if (kr) { - panic("IOMapper:vm_map_get_upl returned 0x%x\n"); - goto bail; - } - - if (!ret->appendBytes(&iopl, sizeof(upl_t))) - goto bail; - - startUpl += iopl_size; - size -= iopl_size; - } while(size); - - // Need to re-establish the dataP as the OSData may have grown. - dataP = getARTDataP(ret); - - // Now grab the page entry of the first page and get its phys addr - pl = UPL_GET_INTERNAL_PAGE_LIST(dataP->u[0]); - *physAddrP = pl->phys_addr; - *virtAddrP = dataP->v; - - return ret; - -bail: - FreeARTTable(ret, size); - return 0; + ppnum_t pagenum = pmap_find_phys(kernel_pmap, (addr64_t) address); + if (pagenum) + *physAddrP = pagenum; + else { + FreeARTTable((OSData *) address, size); + address = 0; + } + + *virtAddrP = (void *) address; + + return (OSData *) address; } void IOMapper::FreeARTTable(OSData *artHandle, IOByteCount size) { - assert(artHandle); + vm_address_t address = (vm_address_t) artHandle; - ARTTableData *dataP = getARTDataP(artHandle); - - int numupls = ((artHandle->getLength() - sizeof(*dataP)) / sizeof(upl_t)); - for (int i = 0; i < numupls; i++) { - upl_abort(dataP->u[i], 0); - upl_deallocate(dataP->u[i]); - } + size = round_page(size); + kmem_free(kernel_map, address, size); // Just panic if address is 0 +} - if (dataP->v) { - size = round_page_32(size); - kmem_free(kernel_map, (vm_address_t) dataP->v, size); - } - artHandle->release(); +bool IOMapper::getBypassMask(addr64_t *maskP) const +{ + return false; } __BEGIN_DECLS